-1/2 a^{a0}_{c0,v0} b^{a3}_{c1,a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c0) a+(c1) a+(v0)
+a^{a2}_{c0,v0} b^{a1}_{c1,a0,a3} eta1^{a3}_{a2} a+(c0) a+(c1) a+(a0) a+(v0) a-(a1)